(1/6+2 và 1/12-10,75).x-7=(2/5+3/8+0,25):0,1
Tìm x,y biết :
a) 1-(5/3/8+x-7/5/24): 16/2/3=0
b) (1/6+2/1/12-10,75).x-7= (2/5+3/8-2,225): 0,1
người ta ko bt thì hỏi , đừng có mak ns mấy câu vô văn hóa thế nhá
1/6+1+1/2-10,75: x- 7+ 2/5+ 3/8+0,2225: 0,1
Tìm x ,biết :
\(\left(\frac{1}{6}+2\frac{1}{12}-10,75\right).x-7=\left(\frac{2}{5}+\frac{3}{8}x+0.225\right):0,1\)
Đang cần gấp
Nhớ giải ra
Tìm x, biết:
2) \(\left(\dfrac{1}{6}+2\dfrac{1}{2}-10,75\right).x-7=\left(\dfrac{2}{5}+\dfrac{3}{8}+0,025\right):0,1\)
2) \(\left(\dfrac{1}{6}+2\dfrac{1}{2}-10,75\right)\cdot x-7=\left(\dfrac{2}{5}+\dfrac{3}{8}+0,025\right):0,1\)
\(\left(\dfrac{1}{6}+\dfrac{5}{2}-\dfrac{43}{4}\right)x-7=\left(\dfrac{2}{5}+\dfrac{3}{8}+\dfrac{1}{40}\right):\dfrac{1}{10}\)
\(-\dfrac{97}{12}x-7=\dfrac{4}{5}\cdot10\)
\(-\dfrac{97}{12}x=8+7\\ -\dfrac{97}{12}x=15\\ x=15:\left(-\dfrac{97}{12}\right)\\ x=-\dfrac{180}{97}\)
Tìm x biết \(\left(1+2\frac{1}{12}-10,75\right)x-7=\left(\frac{2}{5}+\frac{8}{5}+0,225\right):0,1\)
\(\left(1+2\frac{1}{12}-10,75\right)x-7=\left(\frac{2}{5}+\frac{8}{5}+0,225\right):0,1\)
\(=\left(\frac{37}{12}-\frac{129}{12}\right)x-7=\left(2+\frac{9}{40}\right).10\)
\(=-\frac{23}{3}x=\frac{28}{4}+\frac{89}{4}=\frac{201}{4}\)
\(x=\frac{201}{4}:\left(-\frac{23}{3}\right)=\frac{201}{4}.\left(-\frac{3}{23}\right)=-\frac{603}{92}\)
Tìm x biết \(\left(1+2\frac{1}{12-10,75}\right)x-7=\left(\frac{2}{5}+\frac{8}{5}+0,225\right):0,1\)
\(\left(1+2\frac{1}{1,25}\right)x-7=\frac{89}{4}\)
\(\left(1+\frac{14}{5}\right)x-7=\frac{89}{4}\)
toi day mih bi luon
(\(\frac{1}{6}\)+2\(\frac{1}{1^2}\)-10,75). x - 7 =(\(\frac{2}{5}\)+ \(\frac{3}{8}\)+ 0,225); 0,1
mình cần gấp nhé
Tính nhanh :
2, 5 * 8, 7 + 7, 5 * 8, 7 = ?
86 * 5 + 86 * 4 + 86 = ?
123,45 + 23,56 + 76,44 + 54,55 = ?
456 x 45 + 456 x 10 – 456 x 55 = ?
25 x 8 x 17 x 50 = ?
(12 x 2 + 12 x 4 – 12 x 6) : (2 + 4 +…….+12 + 14) = ?
(1+3+5+7+9+11+13+15) : (32 x 2) = ?
(24 x 6 + 4 x 24) : (49 – 24 x 2) = ?
(1+2+3+…..+98+99+100) : 5050 = ?
35 x 11 x 0,1 x 0,25 x 100 x (3 : 0,4 – 7,5) = ?
ai giải nhanh và đúng nhất m k cho, trình bày ra nhé
123,45 + 23,56 +76,44 + 54,55
= (123,45 + 54,55) + (23,56 + 76,44)
= 178 + 100
= 278
456 x 45 + 456 x 10 + - 456 x 55
=456 x (45 +10-55)
=456 x 0
=0
2,5 x 8,5 + 7,5 x 8,5
=8,5 x (2,5 +7,5)
= 8,5 x 10
= 85
86 x 5 + 86 x 4 + 86
= 86 x (5+4+1)
= 86 x10
860
25 x 8 x 17 x 50
= 50 x 4 x 17 x 50
= 200 x 17 x 50
= 200 x 50 x 17
= 10000 x 17
= 170000
(12 x 2 + 12 x 4 - 12 x 6 ) : ( 2 + 4 + 6 +... + 12 +14)
=(12 x (2 + 4 - 6) ) : ( 2 + 4 + 6 + ... + 12 + 14 )
= (12 x 0 ) : (2 + 4 + 6 + ... + 12 + 14 )
=0 : ( 2 + 4 + 6 + ... + 12 + 14)
= 0
\(d,\left(\frac{1}{6}+2\frac{1}{12}-10,75\right).x-7=\left(\frac{2}{5}+\frac{3}{8}+0,225\right):0,1\)\(c,1-\left(5\frac{3}{8}+x-7\frac{5}{24}\right):16\frac{2}{3}=0\)
\(e,\frac{3}{2}x-70\frac{10}{11}:\left(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\right)=-5\)\(f,0,25x\left(\frac{8}{5}:1\frac{1}{2}+\frac{1}{50}\right)=\frac{7}{50}\left(2,91+0,09\right).4\)
ai làm nhanh và đúng mk tick cho
1. | 4-2x | . 1/3 = 1/3
2. (-3)² : | x+(-1) | = (-3)
3. | 3/2 -x | + (-4/5) = -14/5
4. (-4/3) - | 2x + (-1) | = -7/3
5. -9 . | 36 - x/2 | = (-54)
6. 0,75 - | (-x) + 1/3 | = 0,25
7. (-6/5) + | x-9 |= (-6/5)
8. (-4) . | 3x - 1/5 | = 12
1) \(\left|4-2x\right|.\dfrac{1}{3}=\dfrac{1}{3}\)
\(\left|4-2x\right|=\dfrac{1}{3}:\dfrac{1}{3}\)
\(\left|4-2x\right|=\dfrac{1}{3}.3\)
\(\left|4-2x\right|=1\)
=>\(4-2x=\pm1\)
+)\(TH1:4-2x=1\) +)\(TH2:4-2x=-1\)
\(2x=4-1\) \(2x=4-\left(-1\right)\)
\(2x=3\) \(2x=4+1\)
\(x=3:2\) \(2x=5\)
\(x=1,5\) \(x=5:2\)
Vậy x=1,5 \(x=2,5\)
Vậy x=2,5
2) \(\left(-3\right)^2:\left|x+\left(-1\right)\right|=-3\)
\(9:\left|x+\left(-1\right)\right|=-3\)
\(\left|x+\left(-1\right)\right|=9:\left(-3\right)\)
\(\left|x+\left(-1\right)\right|=-3\)
=> \(x+\left(-1\right)\) sẽ không có giá trị nào ( Vì giá trị tuyệt đối luôn luôn lớn hơn hoặc bằng 0 )
Vậy x = \(\varnothing\)
3) \(\left|\dfrac{3}{2}-x\right|+\left(-\dfrac{4}{5}\right)=-\dfrac{14}{5}\)
\(\left|\dfrac{3}{2}-x\right|=\left(-\dfrac{14}{5}\right)-\left(-\dfrac{4}{5}\right)\)
\(\left|\dfrac{3}{2}-x\right|=\left(-\dfrac{14}{5}\right)+\dfrac{4}{5}\)
\(\left|\dfrac{3}{2}-x\right|=-\dfrac{10}{5}\)
\(\left|\dfrac{3}{2}-x\right|=-2\)
=> \(\dfrac{3}{2}-x\) không có giá trị nào thỏa mãn ( Vì giá trị tuyệt đối không thể là số nguyên âm )
Vậy x=\(\varnothing\)